A good teacher is many things to many people. In my own experience, the people I respect the most and think about the most are the teachers who demanded the most discipline (纪律) from their students.

    I miss one teacher in particular that I had in high school. I think she was a good teacher because she was a very strict person. I remember very clearly a sign on her classroom door. It was a simple sign that said,    "Laboratory: in this room the first five letters of the word was stressed not the last seven." In other words, labor for her was more important than oratory, which means making speeches.

    She prepared her work very carefully and told us to do the same. We got lots of homework from her. Once she had broken her arm, and everybody in the class thought that maybe the homework load would be reduced, but it continued just the same. She checked our work by stamping her name at the bottom of the papers to show that she had read them.

    I think sometimes teachers who demand the most are liked the least. But as time goes by, this discipline really seems to benefit the students.

将物体P从置于光滑水平面上的斜面体Q的顶端以一定的初速度沿斜面往下滑，如图所示．在下滑过程中，P的速度越来越小，最后相对斜面静止，那么由P和Q组成的系统（　　）

   Jane Austen, a famous English writer, was born at Steventon, Hampshire, on December 16, 1775, and died on July 18, 1817. She began writing early in life, although the prejudices（偏见） of her times forced her to have her books published anonymously （匿名）.But Jane Austen is perhaps the best known and best loved of Bath's many famous local people and visitors. She paid two long visits here during the last five years of the eighteenth century and from 1801 to 1806, Bath was her home. Her deep knowledge of the city is fully seen in two of her novels, Northanger Abbey and Persuasion, which are largely set in Bath. The city is still very much as Jane Austen knew it, keeping in its streets and public buildings the well-ordered world that she described so well in her novels. Now the pleasure of learning Jane Austen's Bath can be enhanced （增强）by visiting the Jane Austen Centre in Gay Street. Here, in a Georgian town house in the heart of the city, you can find out more about Bath in Jane Austen's time and the importance of Bath in her life and work.
   The Centre has been set up with the help and guidance of members of the Jane Austen Society. After your visit to the Centre, you can look round the attractive shop, which offers a huge collection of Jane Austen related（相关的） books, cards and many specially designed gifts. Jane Austen quizzes are offered to keep the children busy.
   You can also have walking tours of Jane Austen's Bath, which is a great way to find out more about Jane Austen and discover the wonderful Georgian city of Bath. The tour lasts about one and a half hours. The experienced guides will take you to the places where Jane lived, walked and shopped.